Aryl epoxide–halohydrin transformations: stereochemistry of reactions of aryl epoxides with lithium halide–acetic acid reagent
作者:Jeanne-Marie Bartas-Yacoubou、Nkabuije Maduike、Sampson Kyere、Lanxuan Doan、Dale L. Whalen
DOI:10.1016/s0040-4039(02)00637-8
日期:2002.5
The reactions of indene oxide (4a), 5-methoxyindene oxide (4b), 1,2,3,4-tetrahydronaphthalene-1,2-epoxide (5a) and 6-methoxy-1,2,3,4-tetrahydronaphthalene-1,2-epoxide (5b) with lithium halides in the presence of acetic acid (LiX/HOAc) yield mixtures of cis and trans halohydrins. These results are in contrast to those reported for the reactions of a series of aliphatic epoxides with LiX/HOAc, which
氧化茚(4a),5-甲氧基氧化茚(4b),1,2,3,4-四氢萘-1,2-环氧化物(5a)和6-甲氧基-1,2,3,4-四氢萘-的反应在乙酸(LiX / HOAc)存在下,用卤化锂形成1,2-环氧化物(5b),生成顺式和反式卤代醇的混合物。这些结果与一系列脂族环氧化物与LiX / HOAc反应的报道相反,后者立体定向进行,仅生成反式卤代醇。